Electromagnetic Flow Meter Field Distribution Maximizing Device Sensitivity

Abstract

The presented paper deals with determination of the excited magnetic field magnitudes at different points around the device guarantying maximal output signal. Investigated object is electromagnetic flow meter. The output signal is polarization voltage through the circle cross section of the polarization transducer between its electrodes. Except the magnetic field distribution some geometrical parameters of the device and physical characteristic of the inside moving dielectric are varied. The forward field problem is solved by the use of the Comsol, version 5.0 software package. The inverse problem is solved using skills of the Response Surface Methodology (RSM), Design of Experiments (DOE) and Nonlinear Programming. The numerical approach for finding optimal magnetic field distribution is discrete at chosen points. Applying spline interpolation after that the analytical description of the optimal field distribution is defined.